Add scanpy display settings based on tool scope

[adkinsrs]

Another round of scanpy tSNE/UMAP plot settings. Previously I tried to make some formula to calculate figure size based on the "gridSpec" parameter (from gene expression displays) and spacing info. I have found that this tends to not work for single-dataset displays in the "expanded" view as well as in the single-gene curator.

Two thoughts about how to do this:

1. Have settings based on the scope ("curator", "condensed-view", "expanded-view", "download")
2. Pass in width and height of container to API and set figure information in reference to that.

Things to adjust:

• figure width
• figure height
• wspace (space between column panels)
• hspace (space between row panels)
• font size for title, colorbar, legend items
• legend properties